Surgical retractor



FIG. 1 is a perspective view of a surgical retractor;

FIG. 2 is a front view of the surgical retractor;

FIG. 3 is a side view of the surgical retractor;

FIG. 4 is a back view of the surgical retractor;

FIG. 5 is a side view of the surgical retractor;

FIG. 6 is a top view of the surgical retractor; and,

FIG. 7 is a bottom view of the surgical retractor. 

CLAIM The ornamental design for a surgical retractor, as shown and described. 